I Need advice

So I have felt weird the past two days and didn't think anything of it. I decided to take a test (I'm off BC but we aren't trying- I was tracking my fertility- which is apparently way off) and I got a positive. I'm happy about it because we were going to start trying in the fall, but I'm nervous because I had smoked weed a few times in the past month. (Again, I wasn't smoking with the though of getting pregnant this month) Now I'm petrified that when I go get bloodwork & talk to my doctor I'm going to be judged & looked down on. I just want to be honest with my doctor but I feel ashamed for something that in my opinion should be legalized for recreational & responsible use. I suffer from depression and anxiety and severe migraines and I use it to cope on days that I am really struggling.